He also invented the Skyhook, an air rescue system that involved an airplane and a large helium balloon.
VOA: special.2009.01.14
That necessitated finding what are called "power dollies" motorized hydraulic dollies that look like a set of large jet airplane wheels that are attached to the front and rear of the house.
Often, the people injured in a disaster are literally color-coded by medical workers with colored tags, says Carl Ramsay, chair of emergency medicine at Lenox Hill Hospital in Manhattan, who has cared for people after an earthquake, airplane crashes, and large-scale fires.
The safety board said at the time that 12 accidents since 1993 had involved a large aircraft's wingtip hitting another airplane or object on the taxiway.